Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c2f2df08d54bc6e…

MALICIOUS

PDF

45.0 KB
MD5: 76b98851adadaa7236f6f0ffde8ce52f SHA-1: 717c07a801281db02069ddf9b34f8b1ffe24cf27 SHA-256: 2c2f2df08d54bc6e00d6485a4b4884bdd5daf287db412d50c8f77fbe3449b009
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings and the presence of JS streams. ClamAV detection as 'Pdf.Exploit.Agent-36128' strongly suggests exploitation of a known PDF vulnerability. The large embedded JavaScript streams, though not fully detailed here, are typical for delivering second-stage payloads or performing malicious actions. The document body content is not indicative of a specific lure.

Heuristics 3

  • ClamAV: Pdf.Exploit.Agent-36128 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36128
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0008_000.js
5848792ccd14095dab0aa6042882c1bc9a7a2563a7520c65dfe64a92543bff71		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 45305 bytes
legacy_pdfkit_stage_000.js
27fd43fdccc81d8bf872225b90406e1b5efcb24f92e93d1545ffac213b7b4ab8		 deobfuscated-js double percent-decoded annotation JavaScript at offset 0x1E7 33047 bytes

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